<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 2. 为echarts准备一个具备大小(宽高)的Dom -->
      <div id="main" style="width:750px;height:400px"></div>
    </el-card>
  </div>
</template>

<script>
// 1.导入echarts
// const echarts = require("echarts");
import * as echarts from "echarts";
// import echarts from "echarts",这种引入不起作用,上面两种起作用;

import _ from "lodash";
export default {
  data() {
    return {
      // 需要合并的数据
      options: {
        title: {
          text: "用户来源",
        },
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "cross",
            label: {
              backgroundColor: "#E9EEF3",
            },
          },
        },
        grid: {
          left: "3%",
          right: "4%",
          bottom: "3%",
          containLabel: true,
        },
        xAxis: [
          {
            boundaryGap: false,
          },
        ],
        yAxis: [
          {
            type: "value",
          },
        ],
      },
    };
  },

  created() {},

  // mounted在页面初始化完成之后才执行
  async mounted() {
    // 3. 基于准备好的dom 初始化echarts实例
    var myChart = echarts.init(document.getElementById("main"));

    const { data: res } = await this.$http.get("reports/type/1");
    if (res.meta.status !== 200) {
      return this.$message.error("获取折线图数据失败!");
    }
    // 4.准备数据和配置项
    const result = _.merge(res.data, this.options);
    // var option = {
    //   title: {
    //     text: "ECharts 入门实例",
    //   },
    //   tooltip: {},
    //   legend: {
    //     data: ["销量"],
    //   },
    //   xAxis: {
    //     data: ["衬衫", "羊毛衫", "雪纺衫", "裤子", "高跟鞋", "袜子"],
    //   },
    //   yAxis: {},
    //   series: [
    //     {
    //       name: "销量",
    //       type: "bar",
    //       data: [5, 20, 36, 10, 10, 20],
    //     },
    //   ],
    // };

    // 5.展示数据
    myChart.setOption(result);
  },

  methods: {},
};
</script>
